President Biden used his first campaign event of 2024 to call out his likely opponent, former President Donald Trump, for the threat he poses to American democracy, calling the issue a 'sacred cause' for the race ahead.Plus, uphill climbs in congressional races this year, and Can't Let It Go. This episode: political correspondents Ashley Lopez & Susan Davis, and congressional correspondent Claudia Grisales.This episode was edited by Erica Morrison. It was produced by Jeongyoon Han and Casey Morell. Our executive producer is Muthoni Muturi.Unlock access to this and other bonus content by supporting The NPR Politics Podcast+. Sign up via Apple Podcasts or at plus.npr.org. Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.